A kind of preparation method of composite cemented carbide of tool material

A cemented carbide and tool material technology, applied in the field of composite cemented carbide preparation, can solve problems such as limited application, low strength and toughness, and achieve the effects of inhibiting grain growth, improving hardness and toughness, and enhancing stability

Active Publication Date: 2016-08-17
CHENGDU BANGPU CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with WC-Co cemented carbide, the lower strength and toughness of Ti (C, N)-based cermets greatly limits its application as a cutting tool material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The composite cemented carbide of the present embodiment is made from the following components in parts by weight:

[0037] 35 parts of nano-titanium carbide, 5 parts of nano-titanium nitride, 7 parts of tungsten carbide, 5 parts of niobium carbide, 3-7 parts of silicon carbide, 3 parts of cobalt powder, 1 part of yttrium oxide, 1 part of boron carbide, and 1 part of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0038]Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmospher...

Embodiment 2

[0044] The composite cemented carbide of the present embodiment is made from the following components in parts by weight:

[0045] 40 parts of nano-titanium carbide, 15 parts of nano-titanium nitride, 9 parts of tungsten carbide, 8 parts of niobium carbide, 7 parts of silicon carbide, 5 parts of cobalt powder, 3 parts of yttrium oxide, 3 parts of boron carbide, and 5 parts of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0046] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosp...

Embodiment 3

[0052] The composite cemented carbide of the present embodiment is made from the following components in parts by weight:

[0053] 37 parts of nano-titanium carbide, 10 parts of nano-titanium nitride, 8 parts of tungsten carbide, 7 parts of niobium carbide, 5 parts of silicon carbide, 4 parts of cobalt powder, 2 parts of yttrium oxide, 2 parts of boron carbide, and 3 parts of copper powder. The particle size of the tungsten carbide is 2.0-5.0 μm, the particle size of the cobalt powder is 1.5-3.5 μm; the particle size of the copper powder is 1.8-3.5 μm; the particle size of the yttrium oxide is 1.0-3.0 μm; the The particle size of niobium carbide, silicon carbide and boron carbide is 1.5-3.5 μm.

[0054] Nano-titanium carbide, nano-titanium nitride, tungsten carbide, niobium carbide, silicon carbide, cobalt powder, yttrium oxide, boron carbide, and copper powder weighed according to the above components are mixed evenly by dry ball milling, and then reduced in a hydrogen atmosp...

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Abstract

The invention discloses a method for preparing a composite cemented carbide material for cutting tools. The composite cemented carbide material is prepared from the following components in parts by weight: raw materials are prepared in the following parts by weight: 35-40 parts of nanometer titanium carbide, 35-40 parts of nanometer titanium carbide, 5-15 parts of titanium nitride, 7-9 parts of tungsten carbide, 5-8 parts of niobium carbide, 3-7 parts of silicon carbide, 3-5 parts of cobalt powder, 1-3 parts of yttrium oxide, 1-3 parts of boron carbide, 1‑5 parts of copper powder. The method comprises the following steps: material preparation, preparation of carbon-poor alloy powder, preparation of pre-sintered matrix, carburizing treatment and step-by-step firing. The composite hard alloy prepared by the invention has high strength, good toughness, wear resistance and good thermal shock performance.

Description

Technical field [0001] The present invention involves the preparation of a composite hard alloy of a tool material. Background technique [0002] Hard alloy is used in the manufacturing tools, which has high hardness, good high temperature performance and excellent wear resistance, known as industrial teeth.As a metal cutting alloy, the component changes with the changes in various materials. [0003] Due to its high strength, high hardness, high abrasion resistance, and high red hardness, the carbon -based hard alloy is widely used as cutting tools, mining tools and wear -resistant parts., Low cobalt crude crystal compound structure can meet this requirement. [0004] Metal ceramics has gone through three generations so far. During the "World War II" period, Germany produced metal ceramics with NI bonding TIC.The wetness of other carbides, thereby improving the toughness of the material; the third -generation metal ceramics introduced nitride into the hard phase of the alloy and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C29/02
Inventor 李克林
Owner CHENGDU BANGPU CUTTING TOOLS CO LTD
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